@media screen and (max-width: 1200px) {
  html, body {
    font-size: 12.5px;
  }
  main .banners {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-end;
    background-image: url(../images/optical/banner_img02.png);
    font-size: 3rem;
    margin-top: 4.16em;
  }
  main .banners p {
    width: 92%;
    margin: 28.87rem 0 26.12rem 0;
  }
  main .banners ul {
    display: none;
  }
  main .optical {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    font-size: 2.5rem;
    padding-top: 2.52em;
    padding-bottom: 7.11em;
  }
  main .optical .optic_box {
    width: 92%;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    position: relative;
  }
  main .optical .optic_box .optical_nav {
    width: 100%;
    position: relative;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    top: 0;
    margin-bottom: 2.43em;
  }
  main .optical .optic_box .optical_nav .optical_list {
    width: 50%;
    position: relative;
  }
  main .optical .optic_box .optical_nav .optical_list .title {
    width: 100%;
    height: 3.75em;
  }
  main .optical .optic_box .optical_nav .optical_list .title p {
    font-size: 1.1em;
    margin-left: 8.69%;
  }
  main .optical .optic_box .optical_nav .optical_list .title span {
    width: .8em;
    height: .1em;
    position: relative;
    margin-right: 10.19%;
  }
  main .optical .optic_box .optical_nav .optical_list .shrink {
    width: 100%;
    display: none;
    position: absolute;
    left: 0;
    top: 3.75em;
    z-index: 50;
  }
  main .optical .optic_box .optical_nav .optical_list .shrink ul {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding-bottom: 1.42em;
    background: #f5f5f5;
  }
  main .optical .optic_box .optical_inner {
    width: 100%;
  }
  main .optical .optic_box .optical_inner .opt_tit {
    padding-bottom: 1em;
  }
  main .optical .optic_box .optical_inner .opt_tit span {
    font-size: 1em;
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
  }
  main .optical .optic_box .optical_inner .opt_list {
    margin-top: 3.06em;
    width: 100%;
  }
  main .optical .optic_box .optical_inner .opt_list a {
    width: 100%;
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
  }
  main .optical .optic_box .optical_inner .opt_list a .opt_img {
    width: 100%;
    height: auto;
    margin-bottom: 2.05em;
  }
  main .optical .optic_box .optical_inner .opt_list a .opt_li_inn {
    width: 100%;
    padding-bottom: 2.6em;
  }
  main .optical .optic_box .optical_inner .opt_list a .opt_li_inn p {
    margin-bottom: .85em;
  }
  main .optical .optic_box .optical_inner .opt_list a .opt_li_inn span {
    font-size: 1em;
    width: 100%;
    margin-bottom: 2.45em;
  }
}